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- Smith, Mayo G.2
- Smith, Protheroe.1
- Snow, John, 1813-18581
- Society of the New York Hospital, author.1
- South Carolina Medical Association.1
- Souther, Emery.1
- Spalding, A. M.1
- Spear, John Murray, 1804-18871
- Spear, Robert.1
- Spencer, Thomas, 1793-18571
- Sperry, I. J. (Isaac J.)1
- Sperry, L.1
- Spooner, Edward Oke.1
- Spratt, G. (George)1
- Springfield Aqueduct Company.1
- Spurzheim, J. G. (Johann Gaspar), 1776-18322
- St. John, Samuel, 1813-18761
- Stapf, Ernst, 1788-18601
- State Hospital of the City of New-York.1